<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
    <form th:action="@{/login}" method="post">
        用户名：<input type="text" required name="username">
        <br />
        密码：<input type="password" name="password" required />
        <br />
        <input type="submit" value="登录" /> <label th:text="${msg}"></label>
    </form>

<img th:src="@{/img/111.png}" />
</body>
</html>